Effect of Interstorey Drift Limits on High Ductility in Seismic Design of Steel Moment Resisting Frames

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Published: Jun 22, 2016

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Muhammad Tayyab Naqash

Abstract

The current research activity deals with the seismic design of perimeter steel moment resisting frames of 9, 7and 5 storeys with several span lengths(9.15m, 7.63m, 6.54m and 5.08m) using Eurocode 8. In total 24 cases are designed and analysed using Ductility Class High(DCH) having behaviour factor equals 6.5. In order to shed light on the drift limitations of Eurocode 8, the designed frames are then checked by means of iteration to investigate the optimal behaviour factor. The evaluated behaviour factor is then compared with the code provided behaviour factor and with the evaluated ductility factor of frames, obtained through the use of static nonlinear analysis. Hence the influence of drift criteria on the capacity design rules of Eurocode 8 is investigated. The frame performances are measured in terms of over strength and redundancy factors, strength demand to capacity and drift demand to capacity ratios allowing to the point highlighted conclusions.

Article Details

Issue
2015: Volume 16 JAN 2015
Section
Civil Engineering,Structures, Construction, Geo technology, Water, Transportation

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